实船阻力及流场数值预报方法  

Numerical methods for predicting ship resistance and flow field

作　　者：易文彬[1] 王永生[1] 杨琼方[1] 李剑[1] 

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033

出　　处：《哈尔滨工程大学学报》2014年第5期532-536,共5页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(51009144)

摘　　要：为快速准确预报实船阻力及流场信息,对基于模型尺度数值计算外推方法、虚拟流体粘度方法、实尺度计算方法的阻力及流场计算结果进行了比较和分析。在傅汝德数0.15～0.41内,3种方法与船模试验值外推预报的实船阻力差分别在7%、4.5%、3.5%以内,其中虚拟流体粘度方法和实尺度计算方法均考虑了粗糙度的影响。在波形与伴流场的比较中,虚拟流体粘度方法与实尺度计算方法预报结果基本一致。虚拟流体粘度的方法能够较好预报实船的阻力和流场,且计算量最小,具有较强的工程应用价值。This paper uses the extrapolation method based on the model-scale numerical calculation,virtual fluid viscosity method and full-scale calculation method to predict and analyze the resistance and flow field of a ship in full-scale. With the Froude number within the range of 0.15 ~ 0.41,the difference between the resistance predic-tions based on the three methods and the full-scale data extrapolated from the model-scale measurements is less than 7%,4.5%,3.5%,respectively. In addition,the virtual fluid viscosity calculation and full-scale calculation had in-cluded the effects of roughness. The virtual fluid viscosity method and full-scale calculation method gave consistent predictions of the free surface evaluation and wake field. The virtual fluid viscosity method can predict full-scale re-sistance and the flow field well with the least computation time,and as a result is useful for engineering.

关 键 词：阻力预报 实尺度 粗糙度 虚拟流体粘度 实船阻力 流场 数值预报 

分 类 号：U661.1[交通运输工程—船舶及航道工程]